CVE-2021-20640
Buffer overflow vulnerability in LOGITEC LAN-W300N/PGRB allows an attacker with administrative...
Buffer overflow vulnerability in LOGITEC LAN-W300N/PGRB allows an attacker with administrative privilege to execute an arbitrary OS command via unspecified vectors.
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Buffer overflow vulnerability in LOGITEC LAN-W300N/PGRB allows an attacker with administrative privilege to execute an arbitrary OS command via unspecified vectors.
- Record
CVE-2021-20640- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.7 High
AV:A/AC:L/Au:S/C:C/I:C/A:C - Weakness
- CWE-120
- Updated
- 2026-11-02
CVE List No score
Buffer overflow vulnerability in LOGITEC LAN-W300N/PGRB allows an attacker with administrative privilege to execute an arbitrary OS command via unspecified vectors.
- Record
CVE-2021-20640- Updated
- 2026-11-02
EUVDEUVD-2021-8058 No score
Buffer overflow vulnerability in LOGITEC LAN-W300N/PGRB allows an attacker with administrative privilege to execute an arbitrary OS command via unspecified vectors.
- Record
EUVD-2021-8058- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-56gf-wcqm-qvfm No score
Buffer overflow vulnerability in LOGITEC LAN-W300N/PGRB allows an attacker with administrative...
Buffer overflow vulnerability in LOGITEC LAN-W300N/PGRB allows an attacker with administrative privilege to execute an arbitrary OS command via unspecified vectors.
- Record
GHSA-56gf-wcqm-qvfm- Weakness
- CWE-120
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-20640 is a medium vulnerability (CVSS 6.8) in Logitec Corporation Lan-w300n/pgrb, published February 12, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.57%, the 47th percentile. No source names a fixed version.
References
elecom.co.jp/news/security/20210126-01
jvn.jp/en/jp/JVN96783542/index.html
lists.apache.org/thread.html/rc1778b38e74b5b6142414d57623bd55b023a72361f422836782fca3c%40%3Cdev.tomcat.apache.org%3E
nvd.nist.gov/vuln/detail/CVE-2021-20640
github.com/advisories/GHSA-56gf-wcqm-qvfm